Grading, Drainage & Erosion Permits

Purpose

To control the quantity and quality of storm water runoff

Provide minimum standards for site grading and control of storm water

Permits Required
For any new buildings where the grade of the lot is altered more than three feet. The exception is for new single family residences where the original slope is less than 5%. These permits are governed by Missoula Municipal Code 15.65.

Expiration Date
Permits expire if work is not started within 180 days of issuance.